Window-lock.



P. J. STADTHERR.

WINDOW LOCK.

APPLICATION FILED APR.28, I915.

1 9 1%%,UU? Patented June 22, 1915.

Witnesses {HE NORRIS PETERS C0" PHOTO'LIIHQ, H'ASHINGTUN, 04 b.

PAUL J. STADTHERB, 0F MELROSE, MINNESOTA.

WINDOW-LOCK.

niaaoov.

Application filed April 28, 1915.

To all whom it may concern:

Be it known that 1, PAUL J. STADTHERR, a citizen of the United States, residing at Melrose, in the county of Stearns and State of Minnesota, have invented a new and useful Window-Lock, of which the following is a specification.

The device forming the subject matter of this application is a sash lock or holder, adapted to support a sash in adjusted vertical positions.

The invention contemplates the use of a pair of rotatably mounted eccentrics, combined with a plunger which actuates the eccentrics, and one object of the invention is to provide a device of the type above mentioned in which the plunger cooperates in a novel manner with the eccentrics.

Another object of the invention is to improve the spring means whereby the co centrics are retracted.

A further object of the invention is to improve the plunger mechanism and the guiding means therefor.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawing :-Figure 1 shows the invention in vertical section, mounted in a portion of a sash frame; Fig. 2 shows the invention in vertical section, separated from the sash frame and inverted; Fig. 3 shows the invention in horizontal section; Fig. 4 is a vertical section.

In carrying out the present invention, there is provided a box-like casing 1 which is open at its front, the casing 1 comprising a back 2, a fixed side 3, ends 4, and a removable side 5, the latter being held in place by soldering or in any other suitable way. The ends 4 are prolonged to. form attaching feet 6, equipped with openings 7, as shown in Fig. 4. Fixed to the back 2 and projecting therefrom is a guide tube 8, form- Speoification of Letters Patent.

Patented June 22, 1215..

Serial No. 24,523.

ing, as shown in Fig. 3, an abutment for the side 5.

The numeral 9 indicates one stile of a window sash, the outer edge of the stile being mortised to receive the casing 1 and the feet 6, the guide tube 8 extending through the stile to the inner edge thereof. By means of screws 10 or the like, extended through the openings 7 in the feet 6, the casing 1 may be held to the sash stile 9 as will be clearly understood from Fig. 1. If desired, the back 2 of the casing 1 may be equipped with an opening 11 indicated in Fig. 3, this opening lying between the eccentrics 14 to be described hereinafter, and being adapted to receive, if desired, another securing element, which, entering the sash 9 at the base of the mortise therein, may serve to aid in holding the casing 1 in place.

Projecting from the side 3 of the casing 1 are studs12 upon which are journaled eccentrics 14. Each eccentric 14 is provided in one side with a recess 15 defining a finger 16 located near to the edge of the eccentric 14 and extended circumferentially of the eccentric. Near to the fingers 16, the recesses 15 are prolonged circumferentially of the eccentrics as shown at 17, for a purpose which will be described hereinafter.

In the periphery of each eccentric 14 there is formed a transverse groove 18. On the 'side of the eccentric 14 which is opposite to the side provided with the recess 15, is a parti-circumferential flange 19.

Mounted to reciprocate in the guide tube 18 is a plunger 20, reduced intermediate its ends to form a stem 21 and to form a shoulder 22, the stem 21 being mounted to slide in an opening 23 formed in the back 2 of the casing 1. The inner end of the stem 21 is equipped with a head 24 of approximately triangular outline, the ends 25 of the head 24 being adapted to coact with the fingers 16 to secure a rotation of the cams 14 from the advanced positions of Fig. 1, to retracted positions. Mounted in the guide tube 8 and abutting at one end against the shoulder 22 is a helical compression spring 26, the other end of which abuts against the back 2, the spring 26 constituting a means for retracting the plunger 20.

Projecting from the fixed side 3 of the casing 1 are studs 27 engaged with eyes 29 formed in the intermediate portions of spiral springs 28 which extend around the studs 12 in spaced relation thereto, within the contour of the flanges 19, each spring 28 bearing at one end, as shown at 80, against one of the ends 4 of the casing 1. Each spring, at its opposite end is bent to form a rectangularly disposed arm 31 engaged in its transverse, peripheral groove 18' of the cam 14.

When the plunger is pushed inwardly, the spring 26 is compressed. The ends of the head 2 1 en the plunger engage the fingers 16 on the eccentrics 1i and rotate the same from the advanced positions of Fig. 1 to retracted positions, it being understood that when the eccentrics are in ad vanced positions, they cooperate with a window frame (not shown) and serve to hold the sash frame 9 against vertical movement. Should the plunger 20 be advanced sufliciently, and should the eccentrics 141 be retracted sufficiently, the ends 25 of the head 24 will retire into the circumferentially eX- tended portions 1'? of the recesses 15. Whenthe spring 26 and the shoulder 22 at all times Within the contour of the guide tube 8.

The head 2 1 of the plunger 20 is in slidable contact with the wall 5 of the casing 1 and thus the plunger is held against rotation, the construction being such that the ends 25 of the head will be positioned to engage properly with the fingers 16 of the eccentrics 14. The circumferential flanges 19 on the eccentrics 14c, coacting with the side wall 3 of the casing 1, prevent the springs 28 from being bound between the eccentrics and the said wall of the casing.

Having thus described the invention, what is claimed is 1. In a sash holder, a casing; a pair of eccentrics journaled on the casing; a spring means coacting with each eccentric to move the same to an advanced position; a plunger coacting with the eccentrics to move the same to retracted positions; and a spring means coacting with the plunger to move the plunger to a retracted position, thereby removing the strain from the eccentric actuating springs, and rendering the said springs efiicient as a means for moving the eccentrics to advanced positions.

2. In a sash holder, a casing; a pair of eccentrics journaled in the casing, the eccentrics being provided upon one side with recesses defining fingers, the eccentrics being provided upon their opposite sides with parti-circumfcrential flanges; spiral springs each connected at one end to the casing and connected at their other ends with the respective eccentrics, the flanges cooperating with the casing to prevent the springs from being bound between the eccentrics and the casing; and a plunger slidable with respect to the casing and provided with means for engaging the fingers.

In testimony that I claim the foregoing as my own, I have hereto ailixed my sig nature in the presence of two witnesses.

PAUL J. STADTHERR.

Witnesses:

IV. J. STEPHEN, J. H. SEAL.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. C. 

